Can microplastics from plastic containers cause heart disease?

What's actually in it

Plastic particles from food containers, water bottles, and other sources get swallowed, absorbed into the bloodstream, and can end up lodged in artery walls. Arteries are the vessels that supply blood to your heart. When particles accumulate there, they can trigger inflammation, which is a core driver of atherosclerosis (arterial plaque buildup) and heart attacks.

A 2024 study found microplastics inside arterial plaque samples from patients with heart disease. That was the first direct evidence of plastic in human heart tissue.

What the research says

A 2026 review in Annu Rev Pharmacol Toxicol laid out the mechanisms by which microplastics promote atherosclerosis. Plastic particles in arterial tissue trigger inflammatory signaling, oxidative stress, and disruption of vascular cell function. The review concluded that microplastics are a plausible new risk factor for cardiovascular disease, especially as lifetime plastic exposure accumulates.

Reducing daily plastic food contact reduces how much plastic enters the body. Every meal you store or prepare in glass instead of plastic is one less source of particle exposure.

Switch food and drink containers to glass food storage. Glass produces no particles and gives plastic nowhere to leach from.